.M-upload {
  width: 120px;
  height: 120px;
  margin: 0 auto;
  border: 1px dashed #c1c1c1;
  position: relative;
}
.M-uploadBtn {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
}
.M-uploadBtn input[type='file'] {
  display: block;
  width: 100%;
  height: 100%;
  opacity: 0;
}
.M-upload .mask {
  width: 100%;
  height: 100%;
  text-align: center;
  line-height: 120px;
  font-size: 50px;
  color: #818181;
  background: #fff;
}
